| Aali II - Electrical Trade |
| Weekly Time Table |
|
| Class |
Trade Theory |
Electronic Technology |
Engineering Drawing |
Maths |
Science |
Practical |
Total |
| Aali I |
2 |
- |
2 |
1 |
1 |
4 |
10 |
| Aali II |
2 |
- |
2 |
1 |
1 |
4 |
10 |
| Aali III |
2 |
2 |
- |
1 |
1 |
4 |
10 |
| Aali IV |
3 |
- |
- |
- |
- |
*7 |
10 |
*4 for Practicals & 3 for Project |
| Topics..... |
» Science
» Maths
» Engineering Drawing
» Trade Theory & Practical
» Laboratory Work |
| |
| Topics for Science:- |
| Periods |
Total Periods per Year : 30 |
Periods per Week : 1 |
| Trade / Subject |
Electrician cum Wireman / Fitter cum Welder |
Science (ELECTRICAL & MECHANICAL) |
|
| UNIT 1 |
Electrostatics:
Electrical forces. Coulomb's law. Force on a charge due to several charges. Electric fields due to simple charge distributions. Electric flux. Gauss's law. Electric potential and electric potential energy. Capacitors and capacitance. Effect of dielectrics in capacitors. |
| UNIT 2 |
Current, Electricity:
Current, voltage and resistance. Ohm's law. Resistively of materials. Electrical circuits and Kirchhoff's rules. Wheat stone's bridge and working of a potentiometer. |
| UNIT 3 |
Effects of Current:
Summary of thermal and chemical effects of currents. Details of magnetic effects of current. Oersted's discovery. Magnetic field due to a current (Biot-Savart law). Lorentz force. Ampere's circuital law. The solenoid. Principal of working of galvanometer, voltmeter and ammeter. |
| UNIT 4 |
Magnetism:
Field of a bar magnet. Magnetic field of earth. Magnetic materials. Relation between B & H fields. |
| UNIT 5 |
Electromagnetic Induction:
Faraday's experiments and his law of electromagnetic induction. Principle of a.c generator. Transformer, Generation of three phase power and its use. |
Books Recommended :
» Physics: A text book for class XII (portions from part I and chapter 7 from part II) NCERT, New Delhi. |
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| |
| Topics for Maths:- |
| Periods |
Total Periods per Year : 30 |
Periods per Week : 1 |
| Trade / Subject |
Electrical and Mechanical |
Maths |
|
| UNIT 1 |
Functions and Limits
- Real functions
- Graphs of a straight line and parabola
- Limit of a function
|
Books Recommended :
» Mathematics for class XI and XII (N.C.E.R.T.), New Delhi. |
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| |
Engineering Drawing:- |
| Periods |
Total Periods per Year : 60 |
Periods per Week : 2 |
| Trade / Subject |
Electrician cum Wireman |
Engineering Drawing |
|
| UNIT 1 |
| Practice in reading schematic diagrams, Diagram of typical H.V. dividing box (IS:1255-1967). Sketching of panel board of D.C. motor starter with metering and controlling equipments. |
UNIT 2 |
| Star-delta, Direct-on-line and Autotransformer starters for 3 phase Squirrel cage and Slip ring induction motors (IS:3914-1967) |
| UNIT 3 |
| Wiring diagram showing the connection arrangement and push button control of two speeds A.C motor (IS:3914-1967). Wiring diagram of multi peed A.C. motor (IS:3914-1967). |
| UNIT 4 |
| A.C. 3-phase reversing magnetic starter, magnetically operated A.C. motor starters with 3-push button control station. |
| UNIT 5 |
| Layout diagram of typical substation equipments (IS:2274-1963). Plate and pipe earthing as per B.I.S. (IS:3043-1966). |
| UNIT 6 |
| Wiring diagram of Controlling panel for passenger lift. Schematic diagram of bell & indicator, wiring diagram of different burglar alarm. |
Books Recommended :
» Electrical design, estimating, & costing by K.B. Raina & S.K. Bhattacharya.
» Industrial Electronics and Control by S.K. Bhattacharya.
» Electrical Engg. Drawing by S.K. Bhattacharya.
» IS Codes 1255-1967, 3914-1967, 2274-1963, 3043-1966. |
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| |
| Trade Theory and Practical:- |
| Periods |
Total Periods per Year : 60 |
Periods per Week : 2 |
| Trade / Subject |
Electrician cum Wireman |
Trade Theory and Practice |
|
| UNIT 1 |
| Descriptions and specifications of different electric fittings and accessories such as switches, lamp-holders, plugs, bracket fuse units, ceiling rose, main switches, lamps, wires and cables. (IS:732-1963). |
UNIT 2 |
| Wiring materials used in lighting, heating, heating and power installations, Specifications of wooden batten, conduits, switch boards, wiring clips, saddles, junction box, ceiling fan, motors and starters, (both A.C. and D.C.) diesel generating set. |
| UNIT 3 |
| Distribution box: its purpose, type, loadings regulations as per I.E. rules. Kinds of copper wire in use. Comparative study on use of Aluminum and Copper conductors. |
| UNIT 4 |
| Earthling: purpose, installation, its types such as plate, pipe and rod earthling. Method of good earthing (IS:732-1963) I.E. rules governing earthing electrical installation, Earth resistance and Measurement of earth resistance. |
| UNIT 5 |
| Different types of wiring systems and their comparison, Material, accessories and I.E. rules and standards used in Casing-Caping, T.R.S. (batten wiring) and Conduit wiring, Tables for size & no. of conductors to be drawn in different conduits (IS:732-1963). |
Books Recommended :
» Electrical design, estimating, & costing by S.K. Bhattacharya.
» IS Codes IS:732-1963.
» Electrical Estimating & Costing by N. Alagappan & S. Ekambaram (Tata Mc. Graw Hill). |
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| |
| Laboratory Work :- |
| Periods |
Total Periods per Year : 120 |
Periods per Week : 4 |
| Trade / Subject |
Electrician cum Wireman |
Laboratory Work |
|
| 1. |
To study various types of Electrical tools. |
| 2. |
Pracatice in wooden batten for one type. |
| 3. |
Practice for P.V.C Conduit wiring for one point. |
| 4. |
To make connection of an Energymeter.
To measure energy consumed by a 500 W load in given time. |
| 5. |
Making gallery wiring using 12mm diameter PVC conduit pipe on the surface of wooden board and making connection. |
| 6. |
Making Godown wiring using 12mm diameter PVC conduit pipe on the surface of wooden board and making connection. |
| 7. |
Practice of stir case batten wiring using 1/18 SWG copper conductor, PVC insulated cable and making connection. |
| 8. |
Practice office call bell wiring to be operated from different from places with indicator lamp using 12mm diameter conduit PVC pipe and making connection. |
| 9. |
Charging of lead acid battery and measurement of terminal voltage, specific gravity and charging current. |
Books Recommended :
» Fundamental of Electrical Engg. by Ashfaq Hussain.
» Basic Electrical Engg. by V.K. Mehta. |
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